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mesocaval shunt

[mĕz′ə-kā′vəl]
n.
  1. Anastomosis or graft anastomosis of the side of the superior mesenteric vein to the proximal end of the divided inferior vena cava performed as a means of controlling portal hypertension.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.